CHICAGO – Nine days after he suffered a concussion, Red Sox catcher David Ross returned to baseball activities Monday.

Ross has remained in Boston while the team works through a nine-game, three-city road trip which wraps Wednesday against the White Sox. The Red Sox don't know if Ross will need a rehab assignment, but an exam Monday in Boston was encouraging.

"(He) was cleared by the ImPACT (computerized assessment) testing; the symptoms have resolved," manager John Farrell said. "He threw today, he rode a bike for 30 minutes, no repeat of symptoms. We'll look to increase the intensity of the work tomorrow. So he's turned the corner."

Farrell said baseball activities are more prominently planned for Tuesday. So far, Ross has thrown and hit off a tee. Then the question becomes whether he'll need a minor-league rehab assignment.

"Baseball activities will start to come into play a little bit more by the end of this road trip," Farrell said. "What we've got to figure out: Is it better for him to get a game or two just to see some game speed? He's moving in the right direction."